20111134011 has 12 divisors (see below), whose sum is σ = 28484975352. Its totient is φ = 12618750208.

The previous prime is 20111133989. The next prime is 20111134037. The reversal of 20111134011 is 11043111102.

It is not a de Polignac number, because 20111134011 - 2⁶ = 20111133947 is a prime.

It is a super-2 number, since 2×20111134011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20111134411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11597250 + ... + 11598983.

It is an arithmetic number, because the mean of its divisors is an integer number (2373747946).

Almost surely, 2^20111134011 is an apocalyptic number.

20111134011 is a deficient number, since it is larger than the sum of its proper divisors (8373841341).

20111134011 is a wasteful number, since it uses less digits than its factorization.

20111134011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23196270 (or 23196253 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20111134011 its reverse (11043111102), we get a palindrome (31154245113).

The spelling of 20111134011 in words is "twenty billion, one hundred eleven million, one hundred thirty-four thousand, eleven".